Jennings: Contribution to Botany of Isle of Pines. 231 



Wright's Explorations in Cuba," by Underwood {Bulletin of the Torrey 

 Botanical Cluh, XXXII, 1905, pp. 291-300), where a considerable 

 number of Wright's localities are mentioned. 



583. Exogonium argentifolium (A. Richard) House. 



Ipomcea ? argentifolia A. Richard, in Sagra, Historia Fisica, Politica y Natural 



de la Isla de Cuba, XI, 1850, p. 131. 

 Ipomcea prcecox Wright, Anales Academia de la Ciencias Medicas, Fisicas y Natur- 



ales de la Habana. 

 Exogonium argentifolium House, Bulletin of the Torrey Botanical Club, XXXV, 



1908, p. 102. 



"Crescit in insula Pinorum {Isla de Pi?ios)" A. Richard, /. c; 

 near Nueva Gerona, 1904, A. H. Curtiss, No. 48Q; W. W. Rowlee, 

 No. 182, in 1901 (House, /. c). General Distribution: Cuba, the 

 Isle of Pines, and Mexico. 



584. Ipomoea asarifolia (Desrousseaux) Roemer & Schultes. 



Convolvulus asarifolius Desrousseaux, in Lamarck, Encyclopedia Methodique, 



Botanique, III, 1789, p. 562. 

 Ipomoea asarifolia Roemer & Schultes, Systema Vegetabilium, IV, 1817-20, p. 251. 

 Ipomoea urbica Choisy, in DeCandolle, Prodromus Systematis Naturalis Regni 



Vegetabilis, IX, 1845, p. 349. 

 Ipomoea nymphecefolia Grisebach, Catalogus Plantarum Cubensium, 1866, p. 203. 



Not Blume, 1826. 



Near Nueva Gerona, December 10, 1903, and January 7, 1904, 

 A. H. Curtiss, No. 21 g; along the river about 3 miles south of Nueva 

 Gerona, May 12, 19 10, 0. E. Jennings, No. 617. General Distri- 

 bution: Tropical Africa, Asia, the W^est Indies, and the Gulf Coast of 

 Mexico. 



The slight difference of absence or presence of small glands at 

 the base of the blade is scarcely a sufficient difference between Ipomoea 

 nymphecEfolia and I. asarifolia. 



585. Ipomoea Pes-Caprse (Linnaeus) Roth. 



Convolvulus Pes-Capra Linn^us, Species Plantarum, 1753, p. 159. 

 Ipomoea biloba Forskaol, Flora ^Egyptiaco-Arabica, 1775, p. 44. 

 Ipomoea Pes-Caproe Roth, Novae Plantarum Species Prsesertim Indiae Orientalis, 

 1821, p. 109. 



On sandy beach at Bibijagua, May 7, 1910, 0. E. Jennings, No. 7J 

 {see Plate V); also same data, No. 646. General Distribution: On 

 sandy beaches throughout the tropics and subtropics of both hemi- 

 spheres. 



